OFDMA


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OFDMA

(Orthogonal Frequency Division Multiple Access) A cellular air interface based on OFDM for multiple, simultaneous users. The multiuser capability is achieved by assigning each user a subset of OFDM subcarriers (see OFDM). Used in communications networks such as WiMAX and LTE, OFDMA provides air interfaces that are superior to CDMA and TDMA. See SC-FDMA, WiMAX, LTE, CDMA and TDMA.
References in periodicals archive ?
Cho, Seungyoup Han, Choongchae Woo and Daesik Hong, "Performance Analysis of Reuse-Partitioning-Based Subchannelized OFDMA Uplink Systems in Multicell Environments," IEEE Transactions on Vehicular Technology, vol.
Hoang, "QoS-aware and energy-efficient resource management in OFDMA femtocells", IEEE Trans.
Habib, "Adaptive modulation and coding techniques for ofdma systems", IEEE Trans.
Lu, "On relay selection and subcarrier assignment for multiuser cooperative OFDMA networks with QoS guarantees," IEEE Transactions on Vehicular Technology, vol.
In our previous studies [1, 11], the impact of CP length on the cyclostationary features of signals and the difference between jamming signal and OFDMA signals are shown, respectively.
We adopt 0.31ms [14] as the symbol size [tau] of the OFDMA system, and 92.5ms [15] as the fine sensing time.
The simulation results of the suggested system are compared with the OFDMA, the SLM based LFDMA system, and the localized SC-FDMA (LFDMA) uplink systems, respectively.
In this paper, a new swap-based algorithm was put forward to address the FDPS problem in OFDMA system.
The Long Term Evolution (LTE) is based on Orthogonal Frequency Division Multiple Access (OFDMA) in order towards reach the higher data rates as well as to enhance the spectral efficiency.
By using OFDM and OFDMA one can easily increase the bandwidth because OFDM and OFDMA subscribers are orthogonal to each other and do not interface each other
Hossain, Le, and Niyato summarize the radio resource management problem in multi-tier networks, covering small cells based on both code division multiple access (CDMA) and orthogonal frequency-division multiple access (OFDMA).